What Is Basic Strategy?

Basic strategy is a set of mathematically derived decisions for every possible hand combination in blackjack. It tells you whether to hit, stand, double down, split, or surrender based on your hand total and the dealer's visible card.

It doesn't guarantee wins — no strategy can — but it minimises the house edge and gives you the best statistical chance over time. Players who ignore basic strategy and play on gut feeling are giving the house a significantly larger advantage than necessary.

The Core Decisions in Blackjack

  • Hit: Take another card to increase your hand total.
  • Stand: Keep your current total and end your turn.
  • Double Down: Double your bet and receive exactly one more card.
  • Split: Separate a pair into two independent hands, each with its own bet.
  • Surrender: Fold your hand and forfeit half your bet (available at some tables).

The Key Principles of Basic Strategy

When to Hit vs. Stand on Hard Hands

A "hard hand" is any hand without an Ace counted as 11. General guidelines:

  • Always stand on hard 17 or higher.
  • Hit on hard 8 or less — you cannot bust with one more card.
  • With totals of 12–16, your decision depends on the dealer's upcard. If the dealer shows a weak card (2–6), standing is often correct. If the dealer shows a strong card (7–Ace), hitting is typically better.

Playing Soft Hands (Hands with an Ace)

Soft hands are more flexible because the Ace can count as 1 or 11. Key points:

  • Never stand on soft 17 — always hit or double down. A total of 17 rarely wins at showdown.
  • Soft 18 against a dealer's 9, 10, or Ace: hit rather than stand.
  • Soft 19 and above: stand.

When to Double Down

Doubling down is most powerful when you're in a strong position. Common double-down situations:

  • Hard 11 against almost any dealer upcard.
  • Hard 10 against a dealer 2–9.
  • Hard 9 against a dealer 3–6.

When to Split Pairs

Splitting pairs correctly is one of the most impactful parts of basic strategy:

  • Always split Aces and 8s — this is nearly universal advice.
  • Never split 10s or 5s — a 20 is too strong to break up; two 5s are better played as a hard 10.
  • Split 9s against dealer 2–6 and 8–9.
  • Split 7s against dealer 2–7.

Why the Dealer's Upcard Matters So Much

Basic strategy is not just about your own hand — it's about what the dealer is likely to have. When the dealer shows a low card (2–6), they are considered "weak" because they must hit until reaching 17 and are likely to bust. This changes your optimal play: you should take fewer risks and let the dealer potentially bust.

When the dealer shows a strong card (7–Ace), they're more likely to reach a strong total, so you need to be more aggressive about hitting to build a competing hand.

Using a Strategy Chart

Basic strategy is commonly presented as a grid or chart with your hand on one axis and the dealer's upcard on the other. Many casinos permit players to reference a strategy card at the table — a clear sign that using it is completely within the rules.

Memorising the most common scenarios (hard totals, splitting Aces and 8s, doubling on 11) will cover the vast majority of hands you'll encounter.

Final Thought

Basic strategy won't turn blackjack into a guaranteed winner, but understanding it means you're making the most informed decision possible on every hand. That's the foundation of smart play.